Valve for internal-combustion engines.



`.|.V C. MCINTOSH. VALVE FOR INTERNAL COMBUSTION ENGINES. M-

APPLICAHON FILED JAN.16, 1913.

1,21 1,202. .Patent/ed Jan. 2,1917.

2 SHEETS-SHEET l.

J. C. MclNTOSH.

VALVE FOR INTERNAL coNlBusTloN ENGINES.

APPLICATION FILED IAN. I6, 1:9413.

Patented Jan. 2, 1917.

2 SHEETS-SHEET 2- lic owvmw/wbozzwm j motor.

JOHN CAMPBELL MCINTOSH, OF THE GLEN, BY PAISLEY, SCOTLAND, ASSIGNOR TO WILLIAM HENRY ALEXANDER AND JOHN LIDDLE, BOTH 0F GLASGOW, SCOTLAND.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented J an. 2,191 7.

`Original application tiled December 20, 1909, Serial No. 534,168. Divided and this application led January 16, 1913.

To all whom t may concern:

Be it known that I, JOHN CAMPBELL Mc- IN'rosH, a' subject of the King of Great Britain, residingin Glenhall, The Glen, by Paisley, Scotland, have invented certain new and useful Improvements in Valves for Incidental tothe working of the valves is materially reduced, the lubricationv ofthe valvesleeves is improved, and all parts of the valve sleeves and their operating connections, as well as the working plston, are readily accessible for adjustmentor repairs. In the accompanying drawings -I have illustrated a preferred embodiment of my invention and in the said drawings, Figure 1 is a vertical longitudinal sectional view through the cylinder of one form of my iniproved motor; Fig. 2 is a transverse vertical sectionalview at right angles to Fig. l. Fig. 3 is a view similar to Fig. 1 but showing the cylinder-head and thev valve sleeves with. their operating devices removed from the cylinder; Fig. 4 is a view similar -to a portion of Fig. l but showing ,a slightly modified apparatus, and Fig. 5 is a detail view which will be later described.

Referring now to the drawings, in which corresponding reference characters indicate corresponding parts throughout all the views, and particularly to Figs. 1, 2, and 3, A indicates the main shaft mounted in the usual manner in the .crank case V of the The cylinder of the motor comprises a lower portion having awater jacket R inclosing a liner M supported on a shoulder M3 which forms the working cylinder of the motor piston N. The inner wall of the water jacket R is offset from the upper part of the liner M forming an annular cavity U in which the valve sleeves G and Serial No..742,358.

H reciprocate. Above the liner M is the cylinder head D whose lower portion is of an external diameter equal to that of the lmer and forms a gas-tight engagement with the liner at the point M just above the ports O of the liner. Immediately below the ports O the liner M is provided with compression rings Q and the cylinder head D is,

provided with similar rings P surrounding its lower end. .s The sleeves G and H have ports corresponding with the ports O of the liner `M andare of just sufiicient length forl their-flower ends Gr3 and H3 to extend below the rings Q and their upper ends to project above the rings P. The valve sleeves G and H are provided with upward projections G H diametrically. opposite from each other in the axial line of the main shaft Aand their projections are provided with trunnions on which are pivoted respectively the connecting rods I, I, and J, J, for reciprocating the valve sleeves from the valve operating shaft C. This shaft extends across the top of the cylinder parallel'with the main shaft A and is mounted in bear- 1ngs C1 C2 projecting upwardly from opposite sides of the cylinder head D adjacent The cylinder head D is coextensive at the top with the water jacket R, except `on the sides where it is recessed as shown at K to provide a working spacefor the valve operating connections, and projects downwardly around the valve sleeves as shown more particularly in Fig. 2, where it is. joined to the open top of the water jacket at R2, the l i.

charge suitable ports Y and Z, registering with the ports O of the liner are provided.

For lubricating the valve sleeves the cavity U is maintained charged with oil and for this purpose I connect the cavity with the crank case by means of suitable bores, inc dicated by the dotted lines'W, which enter the crank case at W. The oil may be forced through these bores by a suitable force feed lubricator or fed directly to the cavity U and allowed to drain through the bores to ing piston and also keeps the hot gases out' of contact with the valve sleeves. The liner is in fixed metallic contact" with the water jacket at both ends and cannot therefore become highly heated. Further, by connecting the liner with the cylinders at the bottom and spacing the water jacket therefrom throughout its upper portion, an oil retaining well is formed so that the valve sleeves work in oil and are perfectly lubricated at all times. valve operating connections may be attached to the top of the valves so that by forming the cylinder head detachable in the manner shown the entire valve mechanism may be removed as a unit as shown in Fig. 3. For this purpose the shaft C is preferably made up of sectionscoupled together at their ends as shown at X, so that driving connections of the shaft need not be disturbed. By operating the valve sleeves from the top instead of the bottom the length of the sleeves is materially reduced.l Instead of having to extend into the crank chamber they need be no longer than necessary to properly engage the rings P and Q.

In Figs. 4 and 5 I have illustrated a slightly modified form of my improved motor. In ythis construction the liner M is eX- tended tonear the top of the cylinder head and carries both sets of compression rings I and Q. By this construction the joint between the piston and liner within the By this construction also the working portion of1- the valve sleeves is avoided.

Having thus described my invention what I claim as new and desire to secure by Let- I ters Patent is:

combination of a cylinder, a liner therefor having ports therein, a'plurality of concentric valve sleeves surrounding said liner, said sleeves terminating a short distance below said ports and above the lower end of said liner, the upper portion of one of said sleeves being offset laterally, and ,a crank engaging said offset portion for operating said valve sleeves.

3. In an engine of the class described the combination of a cylinder, a cylindrical liner mounted in said cylinder with its inner surface forming a continuation of the bore of said. cylinder, a detachable cylinder head closing the top of said liner and comprising a portion having an exterior diameter equal to that of said liner, and a plurality of concentric valve sleeves mounted on said liner and cylinder head, one of said sleeves provided with a pair of diametrically disposed upward projections constituting trunnions, and connecting rods pivotally connected to said trunnions for operating said valve sleeves.

In witness whereof, I have hereunto set my hand at Glasgow, Scotland, this 24th day of December, 1912.

J. CAMPBELL MciNrosH.

Witnesses:

JOHN LIDDLE, CATHERINE HAMILTON. 

